![]() ![]() A DS 718+/918+/1019+ with a Plex Pass can handle a 4K transcode.The embedded GPU cannot decode H.265 10-bit video, i.e. Edit/Clarification: The DS 218+ has a Celeron J3355. In the real works it just isn’t strong enough. The GPU embedded in the Celeron CPU can technically transcode 4K. A DS 218+ with a Plex Pass will work fine as long as you do not transcode 4K video.Regarding where to run Plex Media Server: Make sure your server can handle the load. Enabling subtitles may force a video transcode.When watching non-HDR material (Blu-ray rips, DVD rips, home movies, etc) It will always transcode which will force a video transcode if subtitles are enabled. SRT subtitles are OK when using AAC/AC3/EAC3/dts/dts-HD audio.Never enable SRT subtitles when using TrueHD audio. ![]() When watching HDR material of any resolution: So, what it boils down to when using the Plex webOS app (no matter what kind of server you use): The NAS will still struggle, especially with higher bit-rate video. PLEX MEDIA PLAYER WHY TRANSCODING SYNOLOGY NAS 1080PProblem 4: Transcoding 1080p on a Synology NAS w/o a Plex Pass is still difficult. With a Plex Pass transcoding 4K is still a struggle on low power systems. Without a Plex Pass you’ll need something in the neighborhood of an i9-9900 CPU. Problem 3: Transcoding 4K video is compute intensive. The resulting video generally looks quite poor, with washed out colors. Plex does not translate HDR colors to SDR colors when transcoding (aka tonemapping). Plex transcodes all video to H.264 SDR (standard dynamic range). Problem 2: Transcoded HDR video looks bad. Enabling subtitles often results in a video transcode. ![]() It does not handle subtitles well (reference earlier post). Problem 1: The Plex webOS app is very limited. To meet that goal, you may have to choose alternate audio or subtitle tracks, depending on the capabilities of your Plex clients and server. Transcoding should be kept to a minimum, and HDR material should never be transcoded. When using Plex, the goal should always be to direct play or direct stream your content. ![]()
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